Dipterocarpus Gaertn. (Dipterocarpaceae) leaf from the Middle Siwalik of eastern Nepal and its phytogeographic and climatic significance

Authors

  • Gaurav Srivastava Birbal Sahni Institute of Palaeosciences, Lucknow, India
  • Purushottam Adhikari Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Rakesh C. Mehrotra Birbal Sahni Institute of Palaeosciences, Lucknow, India
  • Lalu Paudel Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, Nepal
  • Dieter Uhl Senckenberg Forschungsinstitut und Naturmuseum, Senckenberganlage 25, 60325 Frankfurt am Main, Germany
  • Khum N. Paudayal Central Department of Geology, Tribhuvan University, Kirtipur, Kathmandu, Nepal

DOI:

https://doi.org/10.3126/jngs.v53i0.23799

Keywords:

Fossil, climate change, Dipterocarpaceae, Miocene, Nepal

Abstract

A leaf of Dipterocarpus (Dipterocarpaceae) is described from the Lower member of Middle Siwalik of eastern Nepal. Its presence indicates that during the deposition of the sediments there was a warm and humid climate with dry season of not more than 3–4 months. The modern distribution of the genus and family reveals that nowadays they have disappeared from the modern flora of Nepal. The most plausible reason for their disappearance might be an increase in length of the dry season caused by the upliftment of the Himalaya.

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Published

2017-12-31

How to Cite

Srivastava, G., Adhikari, P., Mehrotra, R. C., Paudel, L., Uhl, D., & Paudayal, K. N. (2017). Dipterocarpus Gaertn. (Dipterocarpaceae) leaf from the Middle Siwalik of eastern Nepal and its phytogeographic and climatic significance. Journal of Nepal Geological Society, 53, 39–45. https://doi.org/10.3126/jngs.v53i0.23799

Issue

Vol. 53 (2017)

Section

Articles

License

© Nepal Geological Society